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Znse lens

Infrared element

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(1) Transmission range from 600nm to 16μm (2) Low dispersion Zinc selenide materials are usually prepared by vapor deposition methods and are commonly used in thermal imaging, infrared imaging, and medical systems. In high-power CO2 laser systems, due to its low absorption correlation coefficient and high thermal shock resistance. Zinc Selenide material is relatively soft (Knoop hardness of 120), easy to scratch, it is recommended not to be used in harsh environments, be extra careful when holding and cleaning, and use even force when holding or wiping, wear gloves or rubber Finger cots to prevent contamination. Do not hold with tweezers or other tools.
ZnS Lens

Infrared element

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As an important two-, six-compound semiconductor, ZnS nanomaterials have attracted great attention not only because of its outstanding physical properties such as wide band gap, high refractive index, high transmittance in the visible range, but also Its great potential for application in optical, electronic and optoelectronic devices. Zinc sulfide has excellent fluorescence effect and electroluminescence function, and nano-zinc sulfide has a unique photoelectric effect, showing many excellent properties in the fields of electricity, magnetism, optics, mechanics and catalysis, so the research of nano-zinc sulfide has caused More people's attention, especially in 1994, Bhargava reported that the surface passivated nano-ZnS:Mn phosphor not only has an external quantum efficiency as high as 18% at high temperature, but its fluorescence lifetime is shortened by 5 orders of magnitude, and it emits light. The performance has been greatly changed, and a new way has been opened up for the application of ZnS in materials. It can be used to make white pigments and glass, luminous powder, rubber, plastic, luminous paint, etc.
Ge lens

Infrared element

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Germanium single crystal has high hardness, good thermal conductivity, insoluble in water, and the transmission band is 2-12μm. It is a very commonly used infrared optical material. Currently widely used in infrared imaging systems and infrared spectrometer systems. Germanium single crystals are also used as substrate materials for various infrared filters. High-purity germanium single crystal has a high refractive index, is transparent to infrared rays, does not transmit visible light and ultraviolet rays, and can be used as germanium windows, prisms or lenses that transmit infrared light. The ability of germanium to absorb light increases as the temperature rises. Above 100 degrees Celsius, it will have a significant impact on the transmittance, which will seriously affect the performance of the optical system. Due to its high surface reflectivity, germanium components are usually coated with anti-reflection coatings.3 Germanium windows with ~12µm coatings are used for mid-IR and multispectral applications, and germanium windows with 8~12µm coatings are typically used in thermal and infrared imaging systems.
Si lens

Infrared element

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Silicon material has good thermal conductivity, low density, high hardness, and good light transmission performance at 1.5-8um. Monocrystalline silicon is usually used as a substrate for 3-5μm mid-wave infrared optical windows, infrared lenses, and optical filters, and is also a common material for CO2 lasers and mirror substrates in spectrophotometers.Spherical lenses include both converging lenses such as plano-convex and biconvex, as well as diverging lenses such as biconvex and plano-concave.If the spherical lens is converging, it has a positive focal length, the image will be true, the orientation is upright. The center of a converging lens is thicker than the edges, and rays parallel to the principal axis converge toward the principal focus.Divergent spherical lenses are thinner at the center and thicker at the edges. Since parallel rays diverge as they pass through the lens, they appear to come from a virtual focal point (negative focal length) at a point in front of the lens. We call this a virtual focus because the light doesn't actually pass through it and the image appears upside down.
CaF2 Lens

Infrared element

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Calcium fluoride (CaF2) crystals have high hardness, strong resistance to mechanical shock and thermal shock, and good transmissivity in the ultraviolet, visible and infrared bands. They are widely used in laser, infrared optics, ultraviolet optics, high-energy detectors and other scientific and technological fields, especially their optical performance in the ultraviolet band is very good. They are known as optical crystals in the ultraviolet cutoff band. They have high transmissivity, low fluorescence radiation, and are ultraviolet photodetectors, Ideal material for UV lasers and UV optical systems. CaF2 crystal. It belongs to cubic crystal system and optical crystal material with light transmission band of 0.13~10 µ m. It is an excellent ultraviolet and infrared window material.

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